<template>
  <div class="tags">
    <el-tag 
      v-for="(tag, index) in tags"
      :key="tag.name"
      :closable="tag.name !== 'home'"
      :effect="$route.name == tag.name ? 'dark' : 'plain'"
      @click="changeMenu(tag)"
      @close="handleClose(tag, index)"
      size="small"
    >
      {{tag.label }}
    </el-tag>
  </div>
</template>
<script>
import { mapState,mapMutations } from 'vuex'

export default{
  name:'CommonTag',
  data(){
    return{

    }
  },
  computed:{
    ...mapState({
      tags: (state) => state.tab.tabsList,
    }),
    ...mapMutations({
      close:'closeTag'
    })
  },
  methods: {
    changeMenu(item) {
      this.$router.push({ name: item.name });
    },
    handleClose(tag, index) {
      const length = this.tags.length - 1; 
      this.$store.commit('closeTag',tag.name)
      if (tag.name !== this.$route.name) {
        return;
      }
      if (index === length) {
        this.$router.push({
          name: this.tags[index - 1].name,
        });
      } else {  
        this.$router.push({
          name: this.tags[index].name,
        });
      }
    },
  }
}
</script>

<style lang="less">
.tags {
  padding: 20px;
  .el-tag {
    margin-right: 15px;
    cursor: pointer;
  }
}
</style>